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    Statistics - Probability

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    A certain medical test has the following characteristics. In case of a viral infection, the test shows positive with probability 0.8. Even if there is no viral infection, the test shows positive with probability 0.1. There is a 1/5 chance that any patient has a viral infection. If a patient tests positive on this test, what is the probability that he/she has a viral infection?

    a. 2/3
    b. 1/5
    c. 3/4
    d. 1/3

    © BrainMass Inc. brainmass.com June 3, 2020, 11:02 pm ad1c9bdddf
    https://brainmass.com/statistics/probability/260440

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